Filling devices



Sept. 1, 1959 o. A. VON SMEKAL 2,902,052

FILLING DEVICES Filed Oct. 26, 1956 Patented Sept. 1, 1959 United StatesPatent Ofiice 4 v FILLING DEVICES. Otto Anton von Smekal, Potton,England Application October 26, 1956, Serial No. 618,584

Claims priority, application Great Britain October 28, 1955 Claims. (Cl.141-105) This invention relates to filling devices and more particularlyto filling devices of the character used to fill a vessel with twomiscible liquids. It is of particular value in connection with thefilling of the fuel tank of a vehicle with a mixture of oil and petrol.

Most two-stroke internal combustion engines are powered by a petrol/oilmixture and since these are not usually sold in a pre-mixed condition itis necessary at the filling station to effect the mixing as the liquidsare being fed into the tank. One device for effecting such simultaneousfilling and mixing consists of a funnel having a concentric inner tubewhich passes down into the tank to be filled, there being a plurality ofapertures in the tube near to the base of the funnel. The annulussurrounding the tube is charged with oil and petrol is then supplied tothe funnel. It may flow over the surface of the oil in the annulus butfor the most part it runs through the tube into the vessel being filled.At the same time oil passes through the apertures into the tube and ismixed with the petrol as it passes into the vessel.

Such apparatus is quite effective where the oil/petrol ratio does notexceed about 1:16. However, modern two-stroke engines frequently requireoil/petrol ratios of 1:25 or 1:30 and for this purpose the aforesaidapparatus is not wholly efficient.

According to the present invention a filling apparatus for thesimultaneous mixing of two miscible liquids such as oil and petrol andtheir charging into a vessel such as the fuel tank of a two-strokeinternal combustion engine comprises an outer funnel, an inner funnel tothe outer surface of which the outer funnel is sealed, one or moreapertures in said inner funnel near to and above the point where theouter funnel is sealed to it and one or more apertures in said innerfunnel at a substantially greater distance above said point. Theselatter apertures are preferably inclined so that liquid passing down themain funnel tends to be thrown out into the outer funnel.

In use the annulus between the funnel is charged with oil and petrol issupplied to the inner funnel. Mixing of the oil and petrol takes placeboth at the upper apertures and at the lower apertures so that themixture passing out of the lower end of the inner funnel is a verysatisfactory mixture of the oil and petrol.

Preferably, in order to allow air to pass freely out of a vessel whichis being filled via a small opening, usually circular in shape, thedevice is provided with wing plates, e.g. three such plates at 120intervals round the device, whereby the device rests in the fillingaperture on the edges of said wing plates and air canpass out freelybetween such plates.

An embodiment of apparatus according to this invention is illustrated inthe accompanying drawings wherein:

Figure 1 shows the device in diagrammatic cross-section, and

Figure 2 shows a detail of the device in plan.

It consists of an outer funnel 1 and an inner funnel 2, the funnelsbeing sealed together at 3. The inner funnel 2 is provided with lowerapertures 4 and upper apertures 2 5. The, device is shown in positionwith the lower extremity of the funnel 2 passing through a fillingaperture 6 of a tank 7. The device is providedwith three fins 8, 9 and10 which serve to provide passages 11 for air to escape from thetank ,7.The apertures 5 are inclinedas shown.

The outer funnel 1 has an open-top head 12 of shallow coned formationwith an annular base 13' carried on a cylindrical or tubular neck 14shaped with tapered end 15 sealed at 3 to the inner funnel.

The inner funnel 2 is concentrically arranged within the outer funnel;and it incorporates an elongated opentop head 16 of coned formationcarried by a tubular stem or spout 17.

In use, petrol is introduced into the funnel 2 from a petrol pump andoil is introduced into the chamber 18 between the two funnels throughthe annular opening 19 between the rims of the two funnel heads 12, 16.A first mixing takes place at apertures 5 by movement of petrol in thedirmtion shown by the arrows and a second mixing takes place atapertures 4, so that a thorough mixture reaches the lower part of thefunnel 2 and enters the tank 7. Air thus displaced leaves the tank 7through the passages 11 as shown by the arrows.

Figure 2 is a plan section on the line AB of Figure l and shows thedisposition of the fins 8, 9 and 10.

What I claim is:

l. A filling device for the simultaneous mixing of two miscible liquidssuch as oil and petrol and their charging into a vessel such as the fueltank of a two-stroke internal combustion engine which comprises a unitincorporating an outer funnel having an openatop head on a tubular neckwith a tapered lower end, a concentric inner funnel having an open-tophead on a tubular spout which extends through and is sealed to thetapered lower end of the outer funnel, the two funnels being spacedapart to afford an intervening chamber for liquid with an annular filleropening between the spaced rims of the funnel heads, there beingprovided at least one hole in the nozzle wall of the inner funnelcommunicating direct with the bottom of the chamber between the funnelsfor discharge of liquid therefrom into liquid passing down the innerfunnel.

2. A filling device for the simultaneous mixing of two miscible liquidssuch as oil and petrol and their charging into a vessel such as the fueltank of a two-stroke internal combustion engine which comprises a unitincorporating an outer funnel having an open-top head on a tubular neckwith a tapered lower end, a concentric inner funnel having an open-tophead on a tubular spout which extends through and is sealed to thetapered lower end of the outer funnel, the two funnels being spacedapart to afford an intervening chamber for liquid with an annular filleropening between the spaced rims of the funnel heads, there beingprovided at least one hole in the nozzle wall of the inner funnelcommunicating direct with the bottom of the chamber between the funnelsfor discharge of liquid therefrom into liquid passing down the innerfunnel, and in addition at least one hole at a higher level in thenozzle wall also communicating direct with the liquid chamber.

3. A filling device for the simultaneous mixing of two miscible liquidssuch as oil and petrol and their charging into a vessel such as the fueltank of a two-stroke internal combustion engine which comprises a unitincorporating an outer funnel having an open-top head of shallow conedform with an annular base carried on a cylindrical neck with a taperedlower end, a concentric inner funnel having an elongated open-top headof coned formation carried at its lower end on a tubular spout whichextends through and is sealed to the tapered lower end of the outerfunnel, the two funnels being spaced apart to afford an interveningchamber for liquid with an annular filler opening between the spacedrims of the funnel heads, there being provided a ring of holes inr'zthenozzle Wall of the inner f nnel communicating-direct with thebottomcofrthe liquid chamber betweenthe fiinnelsior discharge of liquidtherefrom into the .inner funnel, and'in, addition a ring ,ofiholes at ahigher. .level. in t h e. nozzle wall,-. also;. ;ommuni .7'4 t g direCtwitliih liquid chamber.

4. A filling device as claimed in claim,3,..where in,inturned lips areprovided at the bottoms ,of v the. .upperaging of holes 0 11 directingpassing ,down the inner funnel into thechamber.

5. A filling device ,claimed;in:c1aim ;3,.wherein ex- References Citedin the file of this patent UNITED STATES PATENTS 281,727 Pratt July 24,1883 412,817 Wi1lis Oct. 15, 1889 590,243 Smith Sept. 21, 1897 868,394.=Ash Oet.'-15, 1907 FOREIGN PATENTS 23,662 Great Britain Nov. 5, 1908

